84 
PSYCHE 
[August 
Scinistriatus is widely dispersed, occurring from New England to New 
Mexico The following localities are known to me; Massachusetts; Staten 
Island. New York (Leng.) ; Pennsylvania; New Jersey; North Carolina; Ohio; 
Illinois; Towa; (dttawa ; Canada; Manitoba; Kansas; \"eta Pass, Colorado 
(Schwarz); llreckinridge. Col., <j6oo-iO,ooo feet (W'ickham); New Mexico 
(Snow); Cloudcroft, New Mexico (Knaus.) 
The species here regarded as scinistriatus agrees well in size and general 
character with Say’s description, and is the one so tmderstood by Harris, 
Melsheimer and Ziegler. Moreover it is the only species with which Say 
could have confused his porrcctus (acuctis llbst. ), which he originally described 
as “var B" of scinistriatus. The scinistriatus of Le Conte and Crotch was Le 
Conte’s noz’cinstriatus, a much smaller and very dififerent looking species which 
is common in the eastern United States. The true scinistriatus was described 
as confusus by Le Conte, who afterward wrongly placed it as a synonym of the 
East Siberian sibiricus, with which he also confused his own punctatus. 
3. N. aqiiaticus Linn. 
\’cry similar to scinistriatus, and as a rule a little smaller and less robust, 
though frequently not at all so. The prothorax is a little less narrowed behind, 
the sides less strongly sinuate, the elytral striae less impressed and less coarsely 
punctured than in scinistriatus ■, the discal striae are moreover almost completely 
effaced at apex, while they are more or less distinctly traceable in scinistriatus. 
The tibiae are entirely dark in the great majority of specimens but are oc- 
casionally more or less pale, and the elytra have rarely a more or less distinct 
pale apical vitta. The terminal joints of palpi are perhaps a little more evidently 
dilated in the male than usual, hut the dilation never approaches in degree 
that exhibited by males of scinistriatus. Aquatints is also nearly related to borealis 
and simulator, the former separable however by its more elongate form, and 
the latter by the two apical annulate apical punctures of the elytra. Further 
differences will he given under these species. 
.After a very careful study of available material and of the literature of the 
sul.qect, there seems to he no other course than to unite punctatus Lee. and 
Iiarth'i Putz. with aquatints Linn., which occurs commonly throughout Europe 
and Northern Asia. The punctatus of Le Conte was described from I.ake 
Superior. In the types, and also in a series from Hudson’s Bay Territory in 
the Le Conte collection, the tibiae are reddish and the elytra have a pale 
apical vitta, but on comparison with a typical Newfoundland sijecimen of 
